Exploring the concept of speed. Students will realise that speed is made up of two measurements, one of distance travelled, and one of time taken. These two measurements can be used to calculate speed, which can be converted to different units.
L.I. Students will be able to
1. use appropriate scales, devices & metric units for length, area, volume & capacity, weight (mass), temperature, angle and time.
2. convert between metric units, using whole numbers and commonly used decimals.
3. use a range of multiplicative strategies when operating on whole numbers.
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S.C. We will
calculate speed from measured distance and time
solve multiplication problems using doubling and halving strategies
use know multiplication facts to solve multiplication problems
(nzmaths.co.nz)
Wednesday 30 March 2011
My estimation for running km per hour was 12 km per hour
After test I have discovered that I can run 13.5 km per hour.
Thursday 31 Mach 2011
What speed can a student travel by bike?
Estimation: 21km per hour
Actual: 20 or 19.672km per hour
How many meters per second can a student travel by bike?
Estimation: 5m
Actual:5.4m per sec
I worked this out by going 60 ÷ 3.05 = 19.672
The way I worked it out was I worked out how many second in 3.05 which is 185 seconds, then you go 185 ÷ 1000 = 5.4m per sec.
I now know that to convert km in to km per hour you have to go 60 ÷ _ = to find your answer.
I find that the book was actually harder than what it looks like. It was difficult to calculate how many km they were doing because some of them were in milliseconds. I still need help with my converting.
Friday 1 April 2011
How many km per hour all the world record holders are going and meters per second.
100m
Men: 9.58 seconds: Usain Bolt
10.43 Mph || 44km per hour
Woman: 10.49 seconds: Florence Griffith-Joyner
9.53 Mph || 41.375 km per hour
L.I. Students will be able to
1. use appropriate scales, devices & metric units for length, area, volume & capacity, weight (mass), temperature, angle and time.
2. convert between metric units, using whole numbers and commonly used decimals.
3. use a range of multiplicative strategies when operating on whole numbers.
S.C. We will
- calculate speed from measured distance and time
- solve multiplication problems using doubling and halving strategies
- use know multiplication facts to solve multiplication problems
(nzmaths.co.nz)Wednesday 30 March 2011
My estimation for running km per hour was 12 km per hour
After test I have discovered that I can run 13.5 km per hour.
Thursday 31 Mach 2011
What speed can a student travel by bike?
Estimation: 21km per hour
Actual: 20 or 19.672km per hour
How many meters per second can a student travel by bike?
Estimation: 5m
Actual:5.4m per sec
I worked this out by going 60 ÷ 3.05 = 19.672
The way I worked it out was I worked out how many second in 3.05 which is 185 seconds, then you go 185 ÷ 1000 = 5.4m per sec.
I now know that to convert km in to km per hour you have to go 60 ÷ _ = to find your answer.
I find that the book was actually harder than what it looks like. It was difficult to calculate how many km they were doing because some of them were in milliseconds. I still need help with my converting.
Friday 1 April 2011
How many km per hour all the world record holders are going and meters per second.
100m
Men: 9.58 seconds: Usain Bolt
10.43 Mph || 44km per hour
Woman: 10.49 seconds: Florence Griffith-Joyner
9.53 Mph || 41.375 km per hour
200m
Men: 19.19 seconds: Usain Bolt
10.42 Mph ||44km per hour
Woman: 21.34: Florence Griffith-Joyner
9.37 Mph || 41.09 km per hour
1km
Men: 58.875 seconds: Arnaud Tourant
19.98 Mph || 61.2 km per hour
500m
Woman: 34 seconds: Anna Meares
14.7 Mph || 55km per hour